CIPPIC joined the BC Civil Liberties Association, Dr. Christopher Parsons and Privacy International in writing to Canada's two primary national security oversight bodies, SIRC and the CSE Commissioner. Drawing on an analysis of human rights transparency obligations, the letter notes recent efforts by these two bodies to examine cross-border data sharing arrangements entered into by the two agencies they oversee, CSIS and CSE, respectively. It then poses a few questions regarding the oversight bodies' respective abilities to find out about and assess information sharing arrangements, and regarding the processes by which information-sharing arrangements are formed. The letter constitutes the Canadian instance of an international campaign that sent comparable requests to national security oversight bodies in over 40 countries around the world. The objective is to gain a clearer picture of international data flows between national security agencies, and to establish a dialogue with national security oversight bodies on this matter. Read the letter here: https://cippic.ca/uploads/20170913-LT_re_intel_sharing_agreements-CA.pdf